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gauss jordan

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2022-05-09 16:33:05 -07:00
parent 361888f299
commit ad2445e423
8 changed files with 183 additions and 9 deletions
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31
src/test/simplex.cpp
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@ -15,6 +15,7 @@ Copyright (c) 2015 Microsoft Corporation
#define R rational
typedef simplex::simplex<simplex::mpz_ext> Simplex;
typedef simplex::sparse_matrix<simplex::mpz_ext> sparse_matrix;
typedef simplex::sparse_matrix<simplex::mpq_ext> qmatrix;
static vector<R> vec(int i, int j) {
vector<R> nv;
@ -24,11 +25,11 @@ static vector<R> vec(int i, int j) {
return nv;
}
// static vector<R> vec(int i, int j, int k) {
// vector<R> nv = vec(i, j);
// nv.push_back(R(k));
// return nv;
// }
static vector<R> vec(int i, int j, int k) {
vector<R> nv = vec(i, j);
nv.push_back(R(k));
return nv;
}
// static vector<R> vec(int i, int j, int k, int l) {
// vector<R> nv = vec(i, j, k);
@ -131,6 +132,25 @@ static void test4() {
feas(S);
}
static void add(qmatrix& m, vector<R> const& v) {
m.ensure_var(v.size());
auto r = m.mk_row();
for (unsigned u = 0; u < v.size(); ++u)
m.add_var(r, v[u].to_mpq(), u);
}
static void test5() {
unsynch_mpq_manager m;
qmatrix M(m);
add(M, vec(1, 2, 3));
add(M, vec(2, 2, 4));
M.display(std::cout);
gauss_jordan(M);
std::cout << "after\n";
M.display(std::cout);
}
void tst_simplex() {
reslimit rl; Simplex S(rl);
@ -166,4 +186,5 @@ void tst_simplex() {
test2();
test3();
test4();
test5();
}